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发表于 2012-11-12 08:54
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T2mm2) are considered appropriate to ensure, with a safety margin, that powerful magnets of this type will not
?% X V1 N8 |3 k' l* B. w& U; Kbe permitted for use in toys if they fit entirely within the small parts cylinder. By introducing the flux index limit,
0 E( `$ V/ S, b; E, wthe risk of injuries with magnets will be minimized. As additional data becomes available in the future, this limit) ]" E- Y. s" J( g2 n) e3 E, G
will be assessed to determine whether it is still appropriate.5 C, s9 u0 q4 p2 s7 ]: S: F
Two or more magnets can attract each other and form a compound magnet with a higher flux index than each/ |+ m* D3 }' R$ a9 b7 w& @
single magnet. The flux index will not double if two equally strong magnets are attracted to each other and the
# ]+ p& D/ I9 @! zincrease in flux index will be relatively smaller for every new magnet that is added and will depend on! _% O9 r: r1 }% P- G( U
magnetic material, shape, cross-section, etc. Ingestion of multiple magnets has only been observed with( k) k7 S% f9 n! F! ^
stronger magnets and there is no incident data regarding weak magnets close to the flux index limit forming a+ u' N0 m$ x0 I O$ @2 |; Z
(stronger) compound magnet. Therefore, no additional test for compound magnets is introduced.
/ W/ H* A7 B; s+ S# xToys that contain magnets and which can be expected to become wet during normal and foreseeable use are
0 x; I" [$ b$ Wsubjected to a soaking test to ensure that glued magnets do not detach when the toy is wet. Also, wooden3 J2 H+ `* ~& ]& W$ \
toys are subjected to the test since the properties of wood (such as size of holes) can change even with
. }" D9 h4 \: [0 Xchanges in air humidity.; H8 H) {" x9 O: ^
In some cases magnets are recessed and therefore, cannot be subjected to the normal torque and tension4 y& I9 ?6 q/ `* k1 u
tests. Examples of toys have been found where a magnet has become detached by another magnet. A |: l# ^- c! l$ [: h
tension test for magnets has been introduced to minimize the risk that such magnets become detached during
& k2 a; }% }+ h" jnormal and foreseeable play.
6 H) h- b1 }' MFor toys that comprise only one magnetic component, that toy is considered to meet the definition of a" F2 V( P9 A+ Q; n; [3 O
magnetic component (see 3.xx).% `! x% W+ V4 {4 Z. V- o
Functional magnets in toys are not considered to present the same risk as magnets that form part of the play" q) B/ L+ |4 P( R* Y Q! y5 t
pattern. The use of magnets in these components may not be recognized, as they will be present inside
4 d* ]+ G& A2 o0 O7 relectrical motors or in relays in electronic circuit boards. None of the reported incidents has been linked to5 W1 X+ n* [, z. O& l$ Y! B o# B
magnets released from electrical or electronic components.: I) O, v _/ V" u. x; Y
Magnetic/electrical experimental sets that are intended for children over 8 years of age are excluded from the1 ~$ ]8 G9 \. {' U
requirements in 4.30.2 and instead they are required to carry the prescribed warning. The exception applies to
$ J3 p# [7 A& b4 ]4 Konly the more advanced experimental sets that include building of electrical motors, loudspeakers, doorbells,
& [% u( ~9 A+ D% Qetc., i.e. products that require both magnetism and electricity for their function. Magnetic/electrical! i# _% p; N7 W9 G; c
experimental sets that are intended for children under 8 years are, therefore, required to comply with the( R2 k$ b% P. S& B& O2 ~) H) g
requirements in 4.30.2..* u, m! a% Q- {* {6 }5 O6 A
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发表于 2012-11-12 14:43
